/proc/self/root/proc/4
This explorer reads the filesystem of the server it runs on, so /workspace/user isn't present here. Browsing and the terminal still work against this server's own disk from /.
4 (node) R 2 2 0 0 -1 4194560 525583 0 756 0 1466 524 0 0 20 0 11 0 524 3486253056 426533 18446744073709551615 94611718668288 94611762579381 140734037822784 0 0 0 0 16781312 17922 0 0 0 17 1 0 0 3 0 0 94611818032832 94611818901616 94612026015744 140734037824961 140734037825199 140734037825199 140734037827557 0